While out on a run last week, a student from the University of Wisconsin-Madison came across an envelope filled with cash. But, instead of pocketing the money, the runner returned the missing envelope to the police.

“Another person might have pocketed the money, but the student wanted to do the right thing,” Joel DeSpain, a spokesman for the Madison Police Department, told madison.com.

The 21-year-old student, whose name has not been released, found the UW Credit Union envelope on the sidewalk while running. Several hours earlier, the envelope was reported missing by a 19-year-old woman.

“She didn’t know what happened to her UW Credit Union envelope, only that it was filled with money and likely gone for good,” DeSpain said in the report. “She was wrong on the last count.”

Soon after the runner returned the money to the police, the owner and the envelope were reunited. The exact amount of money in the envelope hasn't been released.